The power amplifier board using the official standard circuit design, chip selection is used in the United States imported Longding mini class D amplifier chip. This chip is not strong we can go to check it under the information.The power amplifier with high efficiency, large power, in the case of 12V power supply can output 10W +10 W power, the chip without heat sink, but also with overheating, overcurrent protection, features can be said to be very powerful.The board has a switch function, the SW shorted, will close the amplifier.Colour:As shownMaterial:pcbPackage Contents:5 x amplifier boardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.